- Added STL files where IFG's have no support pillars at the rear edge of the model.
- Added support pillar at the rear edge of the model, for improved post-print structural properties (aligned with its longer brother, JRC-IFG1C).
- Redesigned part width. Now with uniform thickness across the part length.
- Added additional 0.2mm to the bottom portion of the (MIL-STD-1913) rail opening for better clearance.
This is a "work-in-progress" prototype of an Inclined Front Grip (IFG) for an SBR (PDW), with a MIL-STD-1913 (Picatinny) Accessory Rail.
Instructional video can be viewed on SBS Extensions YouTube Channel (click link for video). The video shows a preceding IFG variant by SBS Extensions, JRC-IFG1C.
At this moment, there are (3) STL "GRIPS":
- "GRIPS 0" - no textured surface - SBS logo on the front
- "GRIPS 1" - chevron textured surface on the sides - SBS logo on the front
- "GRIPS 2" - countersink textured surface - SBS logo on the front
Thingiverse thumbnails and YouTube video show "GRIPS 2" version.
80% (Minimum Recommended)
SUGGESTED ITEM PRINT SETTINGS
- 80% to 100% Infill
- 3 Shells minimum
- No Supports required
- No Raft required
- Hot End: 235C [based on MakerBot ABS]
- Hot Bed: 113C [based on MakerBot ABS]
- Filament diameter: 1.77 mm [based on MakerBot ABS]
- Retraction: 1.3 mm [based on MakerBot ABS]
- It is strongly recommended to print bottom of grip parallel/flat with a print bed - all STL files with support pillar.
- Do not print actively functional part where the installed device has layers parallel to the 1913 accessory rail, as it offers the weakest mechanical properties.
- STL files were saved in their suggested printing orientation, rotate around Z-axis as required.
- Latest prototype part has been designed using MakerBot ABS filament.
- Print Speed, for ABS filament were based of Original Prusa i3 Slic3r settings and translated to MakerBot.
- Enclosure was used to print with ABS filament.
- No active cooling required, when printing ABS.
- PLA filament not recommended for final use; only use impact resistant filament types: ABS, ASA, PETG, etc.